# -*- coding: utf-8 *-*

#   This file is part of Sql-Rice.
#
#    Sql-Rice is free software; you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation; either version 3 of the License, or
#    (at your option) any later version.
#
#    Sql-Rice is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with Sql-Rice; if not, write to the Free Software
#    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA


import rules.models


def find(field):
    r = rules.models.Rule.get_by(pattern=field)
    v = []
    try:
        for val in r.validators:
            try:
                callable = _validators[val.name]
                v.append(callable)
            except KeyError:
                try:
                    callable = _builders[val.name]
                    callable = callable(val.params)
                    v.append(callable)
                except KeyError:
                    continue
    except AttributeError:
        return []
    return v


class TextLength(object):

    def __init__(self, length=0):
        self.length = length


_validators = {}
_builders = {}


def validator(func):
    _validators[func.__name__] = func
    return func


def ValidatorBuilder(func):
    _builders[func.__name__] = func
    return func
